Pretty Face is a common flower seen at many elevations in the park. It grows in the Yosemite region in three subspecies,

• Triteleia ixioides ssp. anilina, found up to almost 10,000 feet and having blue or cream anthers.
• Triteleia ixioides ssp. scabra, found up to about 7,000 feet and having yellow or cream anthers
• And the less common Triteleia ixioides ssp. unifolia, with a single leaf growing from valley grasslands to lodgepole pine forests.

See the Jepson key to Triteleia for more details, but have a look — in several of the photos you can see the blue of the ssp. anilina in photos taken out along the Alder Creek Trail.